2130000021109 has 2 divisors, whose sum is σ = 2130000021110. Its totient is φ = 2130000021108.

The previous prime is 2130000021103. The next prime is 2130000021211. The reversal of 2130000021109 is 9011200000312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1947986864209 + 182013156900 = 1395703^2 + 426630^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130000021109 - 2⁹ = 2130000020597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130000021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065000010554 + 1065000010555.

It is an arithmetic number, because the mean of its divisors is an integer number (1065000010555).

Almost surely, 2^{2130000021109} is an apocalyptic number.

It is an amenable number.

2130000021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130000021109 is an equidigital number, since it uses as much as digits as its factorization.

2130000021109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 2130000021109 in words is "two trillion, one hundred thirty billion, twenty-one thousand, one hundred nine".